- wiring between the AEVC (10HQ) and the SDAC-1 (1WV1)

 - wiring between the AEVC (10HQ) and the SDAC-2 (1WV2)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 21-26-00-710-001 Operational Check of System via MCDU AMM 21-26-34-000-001 Removal of the Avionics Equipment Ventilation Computer (AEVC) (10HQ) AMM 21-26-34-400-001 Installation of the Avionics Equipment Ventilation
 Computer (AEVC) (10HQ)
 AMM 21-26-43-920-001 Replacement of the Filter Cartridge
 AMM 31-55-34-000-001 Removal of the SDAC (1WV1,1WV2)
 AMM 31-55-34-400-001 Installation of the SDAC (1WV1,1WV2)
 ASM 21-26/02

 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the avionics equipment ventilation from the Multipurpose Control and Display Unit (MCDU) (Ref. AMM TASK 21-26-00-710-001).
 4. Fault Isolation
_______________
R **ON A/C 001-049, 051-099, 101-105, 301-399, 401-499,
 A. If the test gives the maintenance message TEST OK:
 - make sure that the avionics ventilation filter is not clogged. If necessary, replace it.

 - do a check and repair the wiring between the AEVC (10HQ) and the SDAC-1 (1WV1) and/or the wiring between the AEVC (10HQ) and the SDAC-2 (1WV2), pins AB/8A and pins AD/12C (Ref. ASM 21-26/02).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞21-26-00∞∞∞∞∞∞∞∞∞∞Page 245
 Aug 01/05 CES (1) If the fault continues:

 - replace the AEVC (10HQ) (Ref. AMM TASK 21-26-34-000-001) (Ref. AMM TASK 21-26-34-400-001).
 (a) If the fault continues:
 - replace the SDAC-1 (1WV1) and/or the SDAC-2 (1WV2) (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
R **ON A/C 001-049, 101-149, 151-199, 201-299,
R Post SB 21-1087 For A/C 001-049,101-105,
 A. If the test gives the maintenance message TEST OK:
 - make sure that the avionics ventilation filter is not clogged. If necessary, replace the CARTRIDGE-AVNCS VENT FILTER (2082HM) (Ref. AMM TASK 21-26-43-920-001).

 - do a check and repair the wiring between the AEVC (10HQ) and the SDAC-1 (1WV1) and/or the wiring between the AEVC (10HQ) and the SDAC-2 (1WV2), pins AB/8A and pins AD/12C (Ref. ASM 21-26/02).

 (1) If the fault continues:
 - replace the AEVC (10HQ) (Ref. AMM TASK 21-26-34-000-001) (Ref. AMM TASK 21-26-34-400-001).
 (a) If the fault continues:
 - replace the SDAC-1 (1WV1) and/or the SDAC-2 (1WV2) (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
 **ON A/C ALL
 B. Do the operational test given in Para. 3.

 TASK 21-26-00-810-813

 Failure of the AEVC
 1. Possible Causes
_______________
 - AEVC (10HQ)

 - CARTRIDGE-AVNCS VENT FILTER (2082HM)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 21-26-00-710-001 Operational Check of System via MCDU AMM 21-26-34-000-001 Removal of the Avionics Equipment Ventilation Computer (AEVC) (10HQ) AMM 21-26-34-400-001 Installation of the Avionics Equipment Ventilation
 Computer (AEVC) (10HQ)
 AMM 21-26-43-920-001 Replacement of the Filter Cartridge
 AMM 31-50-00-710-001 Ground Scanning of the Central Warning System

 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the avionics equipment ventilation from the Multipurpose Control and Display Unit (MCDU) (Ref. AMM TASK 21-26-00-710-001).
 4. Fault Isolation
_______________
R **ON A/C 001-049, 051-099, 101-105, 301-399, 401-499,
 A. If the test gives the maintenance message AEVC:
 - make sure that the avionics ventilation filter is not clogged. If necessary, replace it. .
 (1) Replace the AEVC (10HQ) (Ref. AMM TASK 21-26-34-000-001) and (Ref. AMM TASK 21-26-34-400-001).

R **ON A/C 001-049, 101-149, 151-199, 201-299,

R Post SB 21-1087 For A/C 001-049,101-105,
 A. If the test gives the maintenance message AEVC:
 - make sure that the avionics ventilation filter is not clogged. If necessary, replace the CARTRIDGE-AVNCS VENT FILTER (2082HM) (Ref. AMM TASK 21-26-43-920-001).
　
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